Ground-clamp.



H. H; HAYNES :SL T. A. BOTH.

GROUND CLAMP.

APPLICATION msn JAN. 14, 1913.

1,268,457. Pateted June 4., i918.

will| onirica.

'HOWARD H. HAYNES, 0F BRIDGEPOET, AND TONJ'ES A. 30TH, GF STRATFORD,CON- NECTICUT, ASSEGNORS T TEE ,CNNECTICUT ELECTRIC MANUFACTURING COM-PAM, A CORPORATION DF CGNINECTEICUT.

Patenten aan@ a, reis.

Continuation of application Serial No. 10,726, filed July i6, 1917. Thisapplication filed. January 14,1918.

` Serial No. 211,775.

To all whom t may concern.

Be it known that we, (l) HOWARD H. HAYNns and (2) ToNJns A. BOTH,citizens of the United States, residing at (1) 1296 Noble Ave.,Bridgeport, Conn., (2) 111.77 West Broad St., Stratford, county of Fair-4 field, State of Connecticut, have invented an rnprovement inGround-Clamps, of which the following is a specication.

rlhis application is a continuation of our application Serial Number180,726, v.filed July 16, 1917 and allowed Nov. 26, 191,7.`

This invention has for its' object the production of a simple andinexpensive ground clamp adapted for use in connection with electricalconductors Wherever it is required to ground the current, as by means ofa pipe or rod extending to the ground or having ground connection, theredmrements being that the clamp be adaptable to dili'erent sizes ofpipes and rods, within reasonable limits, 'and that it be adapted foreasy attachment and be Without detachable parts. With these and otherobjects in view, we have devised the novel ground clamp which we willnow describe referring to the accompanying drawing forming a part oi'this Specification and uslng reference characters to indicate theseveraly parts.

Figure 1 shows our novel ground clamp in elevation; n

Fig. 2 is an edge view corresponding therewith;

Fig. 3 a section on an enlarged scale on the line 3 3 in Fig'. 2,looking in the direction of the arrows; v

, Fig. l a section on the line 1 -4 in Fig. 2,

Y looking in the direction of the arrows;

' means, in the'- present instance,

Fig. 5 a view illustrating the use of our novel ground clamp;

Fig. 6 a perspective view showing a modiforin, and l' f Fig. 7V is asection on the line 7-7 in Fig. 6.

10 denotes a metallic strip which maybe of any requiredy length and isprovided with.

a plurality offholes 11, andl at oneiend with l p ,a trough shapedsocket 12, adapted to recare the end of an electrical conductor,"hidiczltedv by 13., which may he soldered or otherwise secured therein.ontigu'ous to the 'socket we prol vide a screw 1l which isp `permanentlybut jceive the #noch ofthe screw loosely, the hole being of lessdiameter than the loody of the` screw so that the Aend ol-` the ange, byen' gagenient'with a shoulder` 19 at theintersection of the neck withthe body of screw, will hold the screw against dropping out, but leaveit loosely retained in place. denotes a. slide which is adapted to 'bemoved longitudinally on the strip. The

slide is formed sul)stantiallyl similarly to the clip, its ends beingcurvedoover the edges of the strip, and is provided with a threaded hole21 for engagement by the screw. Hole 21 may or may not be formed in ahub 27 punched out from the slide. Having placed the slide on the strip,the endo the strip is bent at an angle as at 22 to retain the slideagainst removal therefrom.

In Fig. 5, we have illustrated the use of .our novel ground clamp. rlheconductor is secured vin the socket as shown, the strip is passed arounda pipe or-rod indicated by 23, and the screw is passed through one ofthe holes 11 in the strip, and engaged with the threaded hole in theslide and tightened up. The strips may be made of any required lengthvand each strip is provided with a plurality of holes to adapt it foruse in connection with diilerent sizes rods, within reasonable limits.

The form illustrated in Figs. 6 and 7 diers in that the socket or otherattachu ing means for the conductor is made part of a mod'ied forh'oclip, indicated by 2li .and lies transversely `to--the strip instead oflongitudinally thereto. ln' this form, one end oi the clip is curvedabout an edge of the strip as before, the other edge of the strip beingengaged hy a lug 25 which is of pipes or` icc' struck out from the metalofi-,he clip and details nl? construc-Y .lli

retaining means for the screw, the Screw is passed through a angelessholein the clip and a retaining flange 26 is punched out of the metal ofthe strip and coperates with the shoulder upon the screw-to retain thelatter against detachment from the strip in the same manner as thean'ge' 18 in the other form.

yl-laviung thus described our invention, we claim l. ground clampcomprising a strip of metal having aiplurality of holes and at one endmeans for the attachment of a conductor, a screw loosely secured to thestrip, and a slide having a threaded hole adapted to register withany'of the holes in the strip vand to be engaged by the screw to clampthe strip about a `ground connection? 2. A ground clamp comprising astrip of metal having a plurality of holes and :1t one end a socket forthe attachment of a conductor, a screw loosely secured to the strip enda socket Vfor the attachment of a con-.

ductor, a slide on the stilipLh-aving a threadved hub adapted toregister with any of said holes, a screw having a reduced neck, and aclip having a hole with the metal surrounding said hole punched througha hole in the strip to form a flange which coperates with the neck toloosely secure the screw to the strip.

4:. A ground clamp comprising a strip of metal having a plurality ofholes and meansl for the attachment of a conductor, a slide haring itsends curved about the edges of the strip and a threaded hub adapted toregister with any of said holes, a screw having a reduced neck and ashoulder, and a clip having its ends curved about the strip t and havinga hole with the surrounding metal punched through a hole in the strip toform a flangey which incloses the neck and is adapted to engage theshoulder, for the purpose set forth.

5. A ground clamp comprising a strip of metal having a plurality ofholes andv atvone end means for the attachment of a conductor, a screwloosely secured to the strip, a slide having a threaded hole adapted toregister with any of the holes in the strip, and means for retaining theslide on the strip.

In testimony whereof We aiix our signatures.A Y l HOWARD H. HAYNEs.ToNJEs A. BOTH. i

